The Differences in the Bispectral Index Between infants and Children During Emergence from Anesthesia After Circumcision Surgery

Abstract

In this study comparing the Bispectral index (BIS) in infants and children undergoing circumcision surgery by use of a standardized surgical and anesthetic technique, a significant decrease in BIS was detected in children during a stepwise decrease in end-tidal sevoflurane concentration. A similar relationship was not demonstrated in infants less than 1 yr old. In both children and infants, BIS increased significantly from pre- to postarousal. Additional studies are necessary to determine changes in BIS with maturational changes in the electroencephalogram.

The effects of caudal local anesthesia blockade on the Bispectral Index during general anesthesia in children

“…In young children, it is possible that caudal analgesia does affect arousal, but BIS does not detect the change. In this respect, the findings of this study may be consistent with previous findings that have demonstrated poorer relationships between BIS and measures of anesthesia effect in small children (6,7). Secondly, the number of subjects enrolled in this study was small.…”

The evaluation of propofol dosage for anesthesia induction in children with cerebral palsy with bispectral index (BIS) monitoring

“…Davidson et al . (14) studied BIS monitoring in infants and children receiving sevoflurane/N 2 O anesthesia with penile block for circumcision. The infants did not demonstrate the relationship between decreasing sevoflurane concentrations from 0.9% to 0.5% and rising BIS values at completion of surgery noted in the older children.…”

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“…The impact of age on BIS is still debated, with divergent findings reported in the anaesthesia literature [21,35]. Davidson and coworkers [35] compared BIS with the corresponding consciousness level during emergence from anaesthesia in a prospective, blinded manner in children (≥1 year old) and infants (<1 year old) undergoing elective circumcision. BIS increased significantly as sevoflurane concentrations decreased in children, but a similar relationship was not demonstrated in infants.…”